YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 1.68361e+01 2.70641e-01 104 2000 3 1.96893e+01 1.47590e+00 616 2000 4 2.16186e+01 1.73529e+00 652 2000 5 2.55817e+01 2.13930e+00 832 2000 6 2.75787e+01 5.27525e-01 262 2000 7 2.91752e+01 6.85056e-01 392 2000 8 2.96333e+01 6.59719e-01 347 2000 9 2.68977e+01 1.41783e+00 301 2000 10 2.35227e+01 1.07705e+00 956 2000 11 2.15982e+01 2.24957e+00 635 2000 12 1.53365e+01 2.01123e+00 258 2001 1 1.25930e+01 1.41874e-01 128 2001 2 1.71036e+01 9.03688e-01 297 2001 3 1.66802e+01 1.30506e+00 522 2001 4 2.01464e+01 1.93442e+00 665 2001 5 2.42849e+01 1.58813e+00 681 2001 6 2.75722e+01 9.53409e-01 320 2001 7 2.91459e+01 1.00230e+00 275 2001 8 2.86825e+01 1.15188e+00 627 2001 9 2.75393e+01 1.35466e+00 368 2001 10 2.32643e+01 1.55177e+00 608 2001 11 2.02162e+01 4.34063e-01 765 2001 12 1.91339e+01 2.13139e+00 710 2002 1 1.40180e+01 3.67121e-01 96 2002 2 1.49057e+01 6.30272e-01 430 2002 3 1.82248e+01 1.60391e+00 128 2002 4 2.39076e+01 2.25420e+00 531 2002 5 2.61936e+01 1.03792e+00 739 2002 6 2.79780e+01 8.35499e-01 485 2002 7 2.91386e+01 1.24432e+00 1743 2002 8 2.92082e+01 1.06661e+00 1975 2002 9 2.84263e+01 1.25470e+00 2202 2002 10 2.73215e+01 1.67505e+00 2668 2002 11 2.17445e+01 2.59777e+00 2138 2002 12 1.56222e+01 1.19496e+00 1205 2003 1 1.28011e+01 1.50446e+00 2062 2003 2 1.41226e+01 1.17543e+00 955 2003 3 2.03516e+01 1.09458e+00 1389 2003 4 2.12814e+01 1.82521e+00 2980 2003 5 2.65941e+01 1.32887e+00 2543 2003 6 2.80808e+01 1.33275e+00 2025 2003 7 2.95825e+01 1.14446e+00 1390 2003 8 2.87547e+01 1.34145e+00 2165 2003 9 2.82416e+01 1.30396e+00 2038 2003 10 2.43903e+01 1.05693e+00 2686 2003 11 2.20430e+01 1.72858e+00 3146 2003 12 1.57669e+01 1.85983e+00 1509 2004 1 1.36423e+01 7.45601e-01 1484 2004 2 1.40146e+01 7.89076e-01 583 2004 3 1.80688e+01 1.53048e+00 2681 2004 4 2.02883e+01 1.38904e+00 2515 2004 5 2.55413e+01 1.84308e+00 3609 2004 6 2.91368e+01 1.09895e+00 2363 2004 7 2.99776e+01 1.47376e+00 2395 2004 8 2.99059e+01 1.16103e+00 2369 2004 9 2.73453e+01 1.69689e+00 2161 2004 10 2.51091e+01 1.52115e+00 2425 2004 11 2.23718e+01 2.29921e+00 2225 2004 12 1.59753e+01 2.20556e+00 2050 2005 1 1.49322e+01 1.71411e+00 1353 2005 2 1.41863e+01 9.15499e-01 1023 2005 3 1.61496e+01 1.47721e+00 1870 2005 4 2.01394e+01 8.69227e-01 2590 2005 5 2.44696e+01 2.10805e+00 3016 2005 6 2.83093e+01 1.39932e+00 2251 2005 7 2.99901e+01 1.59639e+00 2287 2005 8 2.98509e+01 1.78765e+00 2036 2005 9 2.80970e+01 1.35773e+00 3164 2005 10 2.56973e+01 2.05783e+00 3529 2005 11 2.07393e+01 1.53725e+00 2227 2005 12 1.54850e+01 1.99454e+00 1621 2006 1 1.47604e+01 1.03544e+00 1421 2006 2 1.48617e+01 1.56875e+00 1712 2006 3 1.81590e+01 1.04748e+00 2597 2006 4 2.23234e+01 1.95911e+00 3051 2006 5 2.49154e+01 1.27895e+00 3338 2006 6 2.80296e+01 1.28323e+00 3053 2006 7 2.99547e+01 9.03222e-01 2314 2006 8 3.04803e+01 1.09373e+00 2690 2006 9 2.85958e+01 1.53586e+00 2755 2006 10 2.52155e+01 1.82362e+00 3103 2006 11 1.90627e+01 1.80735e+00 2092 2006 12 1.62866e+01 1.38367e+00 966 2007 1 1.54055e+01 1.15173e+00 1182 2007 2 1.39147e+01 8.09561e-01 1228 2007 3 1.79454e+01 1.46929e+00 2787 2007 4 2.07860e+01 1.31464e+00 1958 2007 5 2.41011e+01 9.17978e-01 3896 2007 6 2.74025e+01 1.80225e+00 3052 2007 7 2.99865e+01 1.58637e+00 1658 2007 8 3.06278e+01 1.31169e+00 2579 2007 9 2.86856e+01 1.56812e+00 2372 2007 10 2.65111e+01 8.23764e-01 1998 2007 11 2.02779e+01 1.72971e+00 3084 2007 12 1.80903e+01 1.19305e+00 1613 2008 1 1.44234e+01 1.44263e+00 1194 2008 2 1.59870e+01 1.26923e+00 1513 2008 3 1.77473e+01 1.24129e+00 2065 2008 4 2.13681e+01 1.28164e+00 3020 2008 5 2.47260e+01 1.84943e+00 2941 2008 6 2.85424e+01 1.20196e+00 2690 2008 7 2.95993e+01 1.30408e+00 1866 2008 8 2.84128e+01 1.29719e+00 1473 2008 9 2.78490e+01 1.53901e+00 2716 2008 10 2.43857e+01 1.56897e+00 3644 2008 11 1.88803e+01 1.53494e+00 2286 2008 12 1.58925e+01 8.71008e-01 1536 2009 1 1.50636e+01 1.38686e+00 1965 2009 2 1.42688e+01 1.03861e+00 2118 2009 3 1.76311e+01 2.08720e+00 2174 2009 4 2.13379e+01 1.83313e+00 2775 2009 5 2.56631e+01 1.22515e+00 2406 2009 6 2.80551e+01 1.11076e+00 2861 2009 7 2.89088e+01 1.05357e+00 2478 2009 8 2.97793e+01 1.43065e+00 2065 2009 9 2.86013e+01 8.17670e-01 2314 2009 10 2.62971e+01 2.10214e+00 2919 2009 11 2.04188e+01 1.25439e+00 1782 2009 12 1.54032e+01 2.20105e+00 460 2010 1 1.23277e+01 1.73428e+00 1539 2010 2 1.26938e+01 9.75824e-01 1883 2010 3 1.49089e+01 1.91674e+00 2010 2010 4 2.11705e+01 1.39300e+00 2386 2010 5 2.66390e+01 2.03934e+00 3544 2010 6 3.02138e+01 1.22483e+00 2853 2010 7 2.96226e+01 1.46083e+00 2644 2010 8 2.98369e+01 1.51777e+00 1392 2010 9 2.92985e+01 1.19029e+00 2797 2010 10 2.50577e+01 1.09595e+00 4260 2010 11 2.06354e+01 1.33640e+00 3000 2010 12 1.53669e+01 3.04316e+00 2212 2011 1 1.15322e+01 9.75508e-01 1702 2011 2 1.31930e+01 1.34437e+00 801 2011 3 1.84874e+01 1.37966e+00 2328 2011 4 2.32053e+01 1.46713e+00 3578 2011 5 2.56798e+01 1.35357e+00 4076 2011 6 2.92786e+01 1.21789e+00 2477 2011 7 2.96098e+01 1.17571e+00 2057 2011 8 3.06503e+01 1.06728e+00 3072 2011 9 2.85956e+01 9.58494e-01 2577 2011 10 2.46282e+01 1.78071e+00 2867 2011 11 1.93357e+01 1.29254e+00 2207 2011 12 1.70498e+01 9.49145e-01 1504 2012 1 1.56054e+01 9.06665e-01 2208 2012 2 1.62422e+01 1.27339e+00 806 2012 3 2.07492e+01 1.99421e+00 2762 2012 4 2.32872e+01 7.84851e-01 3476 2012 5 2.63950e+01 1.17487e+00 3502 2012 6 2.74612e+01 9.22845e-01 2530 2012 7 2.90704e+01 1.53115e+00 2125 2012 8 2.90259e+01 1.23721e+00 1759 2012 9 2.84245e+01 1.12137e+00 2322 2012 10 2.52324e+01 1.89699e+00 2934 2012 11 1.91276e+01 1.24455e+00 2667 2012 12 1.68975e+01 1.88164e+00 1511 2013 1 1.53683e+01 8.57976e-01 1102 2013 2 1.62451e+01 1.11199e+00 1920 2013 3 1.59949e+01 1.23018e+00 2646 2013 4 2.05999e+01 1.98846e+00 2154 2013 5 2.43453e+01 2.07559e+00 2701 2013 6 2.76484e+01 1.72020e+00 2667 2013 7 2.87361e+01 1.94003e+00 1151 2013 8 3.01725e+01 1.54419e+00 2722 2013 9 2.96345e+01 1.55647e+00 2743 2013 10 2.56657e+01 1.67016e+00 2646 2013 11 2.08332e+01 2.14255e+00 1644 2013 12 1.73824e+01 1.59342e+00 1514 2014 1 1.30683e+01 1.00822e+00 1188 2014 2 1.49793e+01 1.82316e+00 1133 2014 3 1.69286e+01 1.14712e+00 1794 2014 4 2.06378e+01 1.78077e+00 2218 2014 5 2.53237e+01 1.34236e+00 2473 2014 6 2.87920e+01 1.59508e+00 2291 2014 7 2.97124e+01 1.36218e+00 2610 2014 8 2.98014e+01 1.06276e+00 2826 2014 9 2.87821e+01 1.40142e+00 1295 2014 10 2.56448e+01 1.54190e+00 3457 2014 11 1.89596e+01 2.13102e+00 2388 2014 12 1.61834e+01 1.13757e+00 1531 2015 1 1.47682e+01 1.05855e+00 1748 2015 2 1.37376e+01 1.07244e+00 1780 2015 3 1.90025e+01 1.86731e+00 1752 2015 4 2.27757e+01 1.96978e+00 1081 2015 5 2.64973e+01 1.63598e+00 4047 2015 6 2.98667e+01 1.13279e+00 2572 2015 7 2.95037e+01 1.59270e+00 1836 2015 8 3.02576e+01 1.56402e+00 2061 2015 9 2.83097e+01 1.69691e+00 1269 2015 10 2.45732e+01 1.08394e+00 2533 2015 11 2.26464e+01 2.20900e+00 2006 2015 12 1.89032e+01 1.18296e+00 1389 2016 1 1.55408e+01 2.10507e+00 1751 2016 2 1.44076e+01 1.21466e+00 1624 2016 3 1.83189e+01 2.08551e+00 1635 2016 4 2.18476e+01 1.98823e+00 2090 2016 5 2.58386e+01 1.16641e+00 3219 2016 6 2.92422e+01 1.14723e+00 2760 2016 7 3.11433e+01 1.17547e+00 3017 2016 8 3.04046e+01 1.02436e+00 2395 2016 9 2.93925e+01 1.00272e+00 2470 2016 10 2.58789e+01 1.92896e+00 2681 2016 11 2.16189e+01 2.17983e+00 2931 2016 12 1.81657e+01 1.34384e+00 1752 2017 1 1.65180e+01 1.25223e+00 1508 2017 2 1.77076e+01 1.68073e+00 2054 2017 3 1.86453e+01 1.59757e+00 2672 2017 4 2.28116e+01 1.18361e+00 2956 2017 5 2.51963e+01 1.21623e+00 2241 2017 6 2.84926e+01 1.42978e+00 1856 2017 7 3.05956e+01 1.07638e+00 1594 2017 8 3.02089e+01 1.40958e+00 2342 2017 9 2.81262e+01 1.36018e+00 2726 2017 10 2.56307e+01 1.75988e+00 3533 2017 11 2.10332e+01 1.14665e+00 3056 2017 12 1.73821e+01 1.86285e+00 1466 2018 1 1.23436e+01 6.74248e-01 1442 2018 2 1.86118e+01 2.14911e+00 1012 2018 3 1.83058e+01 1.27057e+00 2900 2018 4 2.11866e+01 1.15325e+00 2320 2018 5 2.45552e+01 1.73644e+00 2355 2018 6 2.89228e+01 1.55807e+00 2099 2018 7 3.01826e+01 9.75289e-01 2380 2018 8 3.01032e+01 1.38971e+00 1699 2018 9 3.04482e+01 1.06383e+00 3352 2018 10 2.74502e+01 2.03476e+00 2880 2018 11 2.06319e+01 1.76524e+00 1172 2018 12 1.62863e+01 1.70611e+00 1159 2019 1 1.57834e+01 1.48034e+00 1502 2019 2 1.63773e+01 2.78576e+00 597 2019 3 1.85688e+01 1.24119e+00 1978 2019 4 2.18315e+01 1.70127e+00 2281 2019 5 2.72526e+01 1.93302e+00 3451 2019 6 2.91371e+01 1.05270e+00 2182 2019 7 3.01137e+01 1.25455e+00 1646 2019 8 3.02066e+01 1.01973e+00 2258 2019 9 2.93314e+01 9.44047e-01 4015 2019 10 2.69884e+01 1.86077e+00 2661 2019 11 1.97880e+01 2.44346e+00 2201 2019 12 1.70956e+01 1.04507e+00 1769 2020 1 1.61922e+01 1.21385e+00 1933 2020 2 1.55569e+01 8.92989e-01 1764 2020 3 2.06614e+01 3.24575e+00 2533 2020 4 2.35080e+01 1.00678e+00 2040 2020 5 2.46840e+01 1.32575e+00 2941 2020 6 2.91801e+01 1.11896e+00 2384 2020 7 2.97811e+01 1.20293e+00 2252 2020 8 3.09023e+01 1.05615e+00 1200 2020 9 2.86071e+01 1.96021e+00 1891 2020 10 2.55672e+01 8.43228e-01 2527 2020 11 2.24080e+01 1.51009e+00 3187 2020 12 1.61205e+01 1.82588e+00 2829 2021 1 1.43115e+01 1.11886e+00 1973 2021 2 1.58668e+01 1.61266e+00 1942 2021 3 1.84293e+01 1.18885e+00 2482 2021 4 2.14309e+01 1.18793e+00 2509 2021 5 2.52853e+01 1.39744e+00 2827 2021 6 2.78106e+01 1.00846e+00 1734 2021 7 2.95574e+01 1.08539e+00 1537 2021 8 3.02715e+01 1.21370e+00 1834 2021 9 2.86412e+01 1.10545e+00 2072 2021 10 2.64653e+01 1.34291e+00 2472 2021 11 1.98673e+01 1.23362e+00 2955 2021 12 1.81537e+01 1.01018e+00 2494 2022 1 1.64336e+01 1.98876e+00 2595 2022 2 1.51289e+01 1.82455e+00 2177 2022 3 1.91061e+01 1.05911e+00 2670 2022 4 2.27232e+01 1.14804e+00 2112 2022 5 2.65276e+01 1.31742e+00 2767 2022 6 2.97978e+01 1.21991e+00 2485 2022 7 3.05338e+01 1.04165e+00 2046 2022 8 3.09223e+01 1.17874e+00 2055 2022 9 2.83846e+01 1.71730e+00 1811 2022 10 2.40508e+01 1.31308e+00 3149 2022 11 2.17273e+01 2.05634e+00 1738 2022 12 1.76087e+01 2.31135e+00 3219 2023 1 1.48073e+01 6.55819e-01 2368 2023 2 1.66869e+01 1.20442e+00 2029 2023 3 2.04032e+01 1.39995e+00 2871 2023 4 2.24689e+01 1.03226e+00 2188 2023 5 2.52525e+01 1.50014e+00 2449 2023 6 2.72084e+01 1.57305e+00 2329 2023 7 3.01243e+01 1.12950e+00 2853 2023 8 3.12953e+01 9.62958e-01 2885 2023 9 2.94703e+01 1.27715e+00 2547 2023 10 2.44268e+01 1.33364e+00 2871 2023 11 2.10188e+01 1.30707e+00 2120 2023 12 1.53319e+01 1.37582e+00 1568 2024 1 1.34919e+01 9.33254e-01 1300 2024 2 1.49834e+01 8.26822e-01 1892 2024 3 1.94301e+01 1.26501e+00 1868 2024 4 2.13409e+01 6.09477e-02 128